User Manual

www.flyingtech.co.uk
power at 200.
Low-voltage cut-off (input voltage checking) and temperature limiting are
not enabled, as reacting to such conditions on a multi-rotor will likely be
worse than ignoring them. Always use a LiPo battery alarm or telemetry to
avoid over-discharging LiPo batteries!
General Operation
Once an input signal is received that is low enough to reach the “neutral” or
power-off area, the ESC will arm (long beep), and the green LED will light.
Once the signal enters the motor start range, the ESC will attempt to start
or run the motor, and continue to do so as long as input signal is above the
neutral position. The amount of power used for starting is not fixed, just
based on the power requested, limited and ramped at first to increase the
chances of a successful start.
In general, the power handling should be as smooth as possible, but not
limited or filtered once running. The default PWM frequency is 18kHz with
800 distinct steps, but may be adjusted to any frequency. During starting,
the PWM frequency is halved both to assist starting of some difficult
motors and as an audible indication of this state.
There is no latching of stopped or start states, as doing so could make
acrobatic manoeuvres unsafe. It should not ever be required to re-arm the
ESC unless some signal, power, or hardware fault occurs. In the event that
an object (such as a tree) is struck by a moving propeller, the motor will
limit the power output until timing is regained, but not require re-arming. In
the event that the propeller is workable, this may permit a safer landing.
If a commutation time-out or long demagnetization period is detected, the
red LED will light. This should not occur in normal operation. Very brief
flashes during rapid acceleration indicate that the demagnetization period
exceeded the expected zero-crossing point and that countermeasures
have been taken to avoid loss of synchronization. The green LED will
remain off once running until the power is turned off and the motor stops.
Throttle Range Calibration
With normal PWM input, ESCs and flight boards should be configured to
match the expected working range. If unmatched, the motors may not start
until higher throttle signal is given, may start “hot” even with a low throttle,
may reach full power early, or may not reach full power. In many cases,